/*
* Copyright (c) 2021 Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.  Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/

#import <AppKit/AppKit.h>
#import <objc/message.h>

#import "JCEFThreadUtilities.h"

static NSString* JavaRunLoopMode = @"javaRunLoopMode";
static NSArray<NSString*> *javaModes = nil;

@implementation JCEFThreadUtilities

+ (void)initialize {
  /* All the standard modes plus ours */
  javaModes = [[NSArray alloc] initWithObjects:NSDefaultRunLoopMode,
                                               NSModalPanelRunLoopMode,
                                               NSEventTrackingRunLoopMode,
                                               JavaRunLoopMode,
                                               nil];
}

+ (void)performOnMainThreadWaiting:(BOOL)wait block:(void (^)())block {
  if ([NSThread isMainThread] && wait == YES) {
    block();
  } else {
    if (wait == YES) {
      [self performOnMainThread:@selector(invokeBlock:) on:self withObject:block waitUntilDone:YES];
    } else {
      void (^blockCopy)(void) = Block_copy(block);
      [self performOnMainThread:@selector(invokeBlockCopy:) on:self withObject:blockCopy waitUntilDone:NO];
    }
  }
}

+ (void)performOnMainThread:(SEL)aSelector on:(id)target withObject:(id)arg waitUntilDone:(BOOL)wait {
  if ([NSThread isMainThread] && wait == YES) {
    [target performSelector:aSelector withObject:arg];
  } else {
    [target performSelectorOnMainThread:aSelector withObject:arg waitUntilDone:wait modes:javaModes];
  }
}

@end
